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Old 09-12-2011, 10:23 AM   #771
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Well I think I am going to do what Jakecpunuts did and use velcro to attach the washer. That way it should make it easier to adjust the balance.

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Old 09-12-2011, 11:22 AM   #772
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Is great if you have the room. My tolerance was really thin. With magnets I have less than 1/64" to the top of my box.

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Old 09-12-2011, 12:25 PM   #773
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We shall test it out and see....I have to go pick up some bolts, velcro, and some spacers to finish it. I might pick up some slow setting epoxy just in case. I am using a fan from an old dell(2001)....hopefully it works well enough!

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Old 09-12-2011, 11:34 PM   #774
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So while I was at publix I just so happened to see some velcro. Of course I bought it so that I could work on my stir plate some more. I got my washer set in a pretty balanced manner. I was going to use the magnetism of my HD magnet to attach it to the washer but the fan throws it off. Should I glue it or should I buy some of the magnets suggested by the OP?

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Old 09-12-2011, 11:42 PM   #775
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nice

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Old 09-13-2011, 12:14 AM   #776
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Bump

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Old 09-13-2011, 01:08 AM   #777
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After centering my washer on the fan, i glued it on then I used that tacky putty you can use to put up posters to get the magnet centered. Using tuis putty allowed me to move the magnet around and start up my stirbar to make sure it won't get thrown. The magnet is actually so well attached to the washer with the putty, I haven't glued it down.

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Old 09-13-2011, 03:36 AM   #778
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There two different magnetizing types used on hd magnets. Some I pulled out of a scsi drive were perfect axial setup so I used one on each end. The recent one I built I had to snap some hd magnets in half but stacking have the power I needed. Alternatively many on here have bought disc or bar magnets with great results. I hear balancing is easier doing that. It just depends on your budget and/or need are. I'm broke atm so my total investment (other than the stir bar that I already had was $0.28 cents.

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Old 09-13-2011, 10:26 AM   #779
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Maybe I will snap mine in half and give it a try. Worse thing that could happen is that I need to by magnets. The thing that kills me is that the magnets are wicked cheap but then they rape you on the shipping. A $2 magnet costs $8 to ship. That doesn't make sense.

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Old 09-13-2011, 11:30 AM   #780
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The target is to have north on one side and south on the other. TBH I don't really understand why the halves work better but I tried a singles, doubles, and halves (both single and double) and only my old axial mags were better than the doubled halves.

Edit: Please note, the halves were magnetized through the length of the magnet rather than through the thickness (aka axially). I thought when you snapped them in half the north side near the south end then becomes the south end but it doesn't seem to act that way for me.

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